Essays on Physics

Niels Bohr is a big person in the history of chemistry. If it wasn’t for him we would not have known as much as we do now about the atom. He came to a conclusion of so many unanswered questions people were left after the …

Contact: Mr Wang Phone: +86-18903999962 EMAIL: Info@filterpress-china. cn Common Problems of Belt Filter Press and the corresponding solutions Common Problems of Belt Filter Press and the corresponding solutions 1. slurry passentrate filter cloth in a great quantity Maybe caused by: in-correct filter cloth model sizing …

Radiation describes a procedure in which energetic atoms or moving ridges travel through a medium or infinite. There are two distinguishable types of radiation ; ionising and non-ionizing. The word radiation is normally used in mention to ionising radiation merely holding sufficient energy to ionise …

Introduction It may be recalled that a d. c. generator can be run as a d. c. motor. In like manner, an alternator may operate as a motor by connecting its armature winding to a 3-phase supply. It is then called a synchronous motor. As …

What is gravity? Gravity is a force pulling together all matter (which is anything you can physically touch). The more matter, the more gravity, so things that have a lot of matter such as planets and moons and stars pull more strongly. Mass is how …

Load cells are detectors which are used to mensurate the degree or force per unit area by change overing the force ( torsion or mass ) into electrical signals and so these signals are displayed by the show unit to demo the degree or force …

A new solar powered adsorption refrigerator with high performance Meunier published a comparison of those three sorption systems for solar cooling (Meunier, 1994). The solid-gas system used in the present study is adsorption. The solar adsorption refrigerators have been developed mainly to be used in …

The mechanical properties of materials are determined by performing carefully designed laboratory experiments that replicate as nearly as possible the service conditions. In real life, there are many factors involved in the nature in which loads are applied on a material. The following are some …

Load shedding is one of the biggest problem faced by everyone in Pakistan, no matter they are domestic or commercial consumers. Pakistan is facing a serious energy crises and it may get worse if not addressed seriously and promptly. Everyone is curious about the role …

Describe an experiment using a simple pendulum to determine the value of acceleration due to gravity (g), deriving any formulae that will be required. The implies of experiments using a pendulum to determine the value of acceleration due to gravity, would be to tie a …

Hypothesis: The incident ray, the normal and the refracted ray all lie in the same plane. Also, according to Snell’s law, for 2 particular media, the ratio of the sine of the angle of incidence to the sine of the angle of refraction should be …

So It’s Alive and Dead? In our lives, we have goals: goals that in all our hopes we may achieve. These can be goals of intellect, goals of physical sports, or goals of human character. Now, different people have different standards and goals; sometimes a …

Introduction Oxygen is one of the vital elements of life because it acts as a fuel for aerobic respiration, which is the energy source in all organisms (the other fuel being glucose). Without energy from respiration, organisms simply die. As an organism (in this case …

Introduction Specific heat is defined as the measure of the ability of a substance to change temperature. Specific heat of a substance is the heat needed to change the temperature of 1 gram of a substance once degree Celsius. The more Joules (unit of heat) …

Energy Harvesting and Nanotechnology| April 28 2011 | Energy harvesting generators are attractive as unlimited replacements for batteries in electronic devices and have been the focus of new researches for past years. This paper reviews the principles behind this technology and their integration to harvest …

Camco, DW and Ludwig have all produced such beasts, as has Japanese drum giant Tama. Its Iron Cobra pedal is truly a drum world icon, having been relied on by countless big-name artists on the world’s biggest stages over many years. But now comes a …

A pure substance: • contains atoms of only one kind. • It has fixed physical and chemical properties like boiling point, melting point, valency, density  • contains only one chemical identity, e. g. one element or one compound. • cannot be separated into 2 or more substances …

Introduction This essay aims to explore the UK based initiatives designed to promote female participation within Science, Technology, Engineering and Mathematical (STEM) disciplines focusing predominately on Physics. The essay will consider the different teaching techniques and styles that have been researched and implemented in order …

The time and temperature change of the reaction are graphed to identify the hanged in enthalpy and entropy that took place as the melted substance solidifies. Using the data we can then predict the change in free energy, GAG . Keyword’s: Entropy, Enthalpy, Free energy, …

Everyone wants to be as much secure as possible. An access control for doors forms a vital link in a security chain. The microcontroller based digital lock for Doors is an access control system that allows only authorized persons to access a restricted area. The …

A frequently misunderstood subject related to electric motors is insulation class and temperature ratings. This paper tries to describe, in basic terms, the temperature relationships that are meaningful in standard AC induction motors. Some of the same information can be applied to DC motors but …

Statement of the research: We consider steady laminar and fully developed fluid motion in the annulus of two circular pipes with longitudinal fins attached to the outer surface of the inner pipe. The fins are straight, non porous and uniformly distributed around the region with …

January 4, 1643 is the time when our great mathematician and physicist, Isaac Newton, was born. His hometown was Woolsthorpe, Lincolnshire, England. His father was a noble farmer but unfortunately he died before Isaac Newton was born. After his father’s death, his mother was married …

Aims and Objectives To interpret the IR Spectrum. To obtain the spectrum of a liquid sample and identified compound using library data base . Introduction Infrared (IR) spectroscopy is one of the most common spectroscopic techniques used by organic and inorganic chemists. Simply, it is …

Black holes are objects so dense that it is not possible for even light to escape their gravity. There are two main processes continuously going on in massive stars. 1. Nuclear fusion: This process takes place in the stars which tends to blow the star’s …

Spectrophotometry: is a device to measure the amount of light in the material used. this device consists of two parts: the first is the light source, and the second is the photometer . the work principle of this device : the liquid or material that …

For billion of years, the Earth has been tirelessly orbiting around the Sun. This repetitive motion was kept by the virtue of gravitational force. And for us to understand the whole story about this, we need not to travel away from the Earth. Instead we …

We all live on a beautiful universe surrounded by beautiful stars and galaxies, but how did this happen. This will lead us to the Big Bang theory, that happened billions of years ago and created this beautiful universe. According to my knowledge about Big bang …

Scientist around the world studies the stars and planets to learn more about the past or to learn how that and our planets are alike. But then there are other scientist who got even deeper and learn what created the planets and stars these scientist …

Issues on rebellion, racial discrimination, and social hierarchy have been considered as the finest works in the field of literature and history.  Stories that portray the truth behind the raging diversion between the whites and the blacks have always been a topic of speculation that …